module teapo.dom {

  export class SyncStorageAccess {

​

    private _folderCache: { [fullPath: string]: HTMLUListElement; } = {};

    private _liCache: { [fullPath: string]: HTMLLIElement; } = {};

    constructor(private _root: HTMLUListElement) {

    }

    update(

      byFullPath: storage.PropertiesByFullPath,

      timestamp: number): void {

    }

​

    read(fullPaths: string[]): storage.PropertiesByFullPath {

      return null;

    }

​

    private _getFolder(fullPath: string, createWhenMissing: boolean): HTMLUListElement {

      var result = this._folderCache[fullPath];

      if (result != null) return result;

      result = this._getFolderNotCached(fullPath, createWhenMissing);

      this._folderCache[fullPath] = result;

      return result;

    }

    private _getFolderNotCached(fullPath: string, createWhenMissing: boolean): HTMLUListElement {

      var lastSlashPos = fullPath.lastIndexOf('/');

      if (lastSlashPos === 0) {

        if (fullPath == '/')

          return this._root;

        else

          return this._getChildFolder(this._root, fullPath.slice(1), fullPath, createWhenMissing);

      }

      else {

        var parentPath = fullPath.slice(0, lastSlashPos);

        var parent = this._getFolder(parentPath, createWhenMissing);

        return this._getChildFolder(parent, fullPath.slice(lastSlashPos + 1), fullPath, createWhenMissing);

       }

    }

    private _getChildFolder(parent: HTMLUListElement, folderName: string, fullPath: string, createWhenMissing: boolean): HTMLUListElement { 

      throw new Error('Not implemented.');

    }

​

    private _getChildLI(parent: HTMLUListElement, folderName: string, fullPath: string, createWhenMissing: boolean): HTMLLIElement { 

      for (var i = 0; i < parent.children.length; i++) {

        var li = parent.children[i];

        if (li.tagName.toLowerCase() !== 'li') continue;

      }

​

​

    }

    private _getEntry(li: HTMLLIElement) { 

    }

​

​

  }

}